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A109467 4 X 4 analog of A094943. 1
1, 26, 256, 2472, 25056, 250016, 2499456, 25002112, 249995776, 2500000256, 25000032256, 249999869952, 2500000260096, 25000000004096, 249999997894656, 2500000008404992, 24999999983190016, 250000000000065536, 2500000000134086656, 24999999999463391232 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..19.

FORMULA

a(n+4)=4*a(n+3)+44*a(n+2)+144*a(n+1)+160*a(n), a(0) = 1, a(1) = 26, a(2) = 256, a(3) = 2472.

G.f.: (1+22*x+108*x^2+160*x^3)/(1-4*x-44*x^2-144*x^3-160*x^4).

CROSSREFS

Sequence in context: A296539 A229715 A125389 * A126547 A136922 A136921

Adjacent sequences:  A109464 A109465 A109466 * A109468 A109469 A109470

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, based on email from Alec Mihailovs, Aug 28 2005

STATUS

approved

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Last modified February 19 20:48 EST 2018. Contains 299357 sequences. (Running on oeis4.)